An adjustable air freshener involves a container for a scented gel which includes a heater which is integrally molded within the base of the container with a connecting plug extending outwardly for coupling to an electrical outlet. The front portion of the container includes a rotary cover with a circular...http://www.google.de/patents/US5220636?utm_source=gb-gplus-sharePatent US5220636 - Adjustable air freshener
